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Date: Wed, 20 Nov 2013 16:26:38 +0100
Message-ID: <CAF+90c8z8Nu3aeem5CTtheJyAs28PCqhfFJQrhOX0ZUweRZGfw@mail.gmail.com>
To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=089e0139faa83e9e8704eb9d68f1
Subject: Re: [PHP-DEV] fix bug #53432 (Assignment via string index access on
 an empty string converts to array)
From: nikita.ppv@gmail.com (Nikita Popov)

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Content-Type: text/plain; charset=ISO-8859-1

On Wed, Nov 20, 2013 at 12:47 AM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:

> Hi all,
>
> This PR seems good fix for 5.6.
>
> https://github.com/php/php-src/pull/463
>
> Test script:
> ---------------
> $a = ''; // empty string
> $a[10] = 'a';
> echo $a; // "Array"
>
> $b = ' '; // non empty string
> $b[10] = 'b';
> echo $b; // "          b"
>
> Expected result:
> ----------------
> "          a"
> "          b"
>
> Actual result:
> --------------
> "Array"
> "          b"
>
> Current behavior does not make sense.
>

The current behavior is that anything "falsey" (e.g. null, false and the
empty string) is silently cast to array when an array operation is applied
to it. I don't like that behavior, but it's somewhat internally consistent
now. Changing it for strings *only* seems a bit weird.

Nikita

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